@babel/helper-split-export-declaration

What is @babel/helper-split-export-declaration?

The @babel/helper-split-export-declaration package is a utility within the Babel compiler ecosystem. It is designed to assist in the transformation of ECMAScript modules by splitting export declarations that have associated expressions. This is particularly useful in the process of transpiling code to be compatible with environments that have varying levels of support for ES modules.

What are @babel/helper-split-export-declaration's main functionalities?

Splitting Export Declarations

This feature allows the transformation of export statements in JavaScript modules, particularly those that export a declaration and its value in a single statement. The code sample demonstrates how an export default declaration would be transformed to separate the declaration and the export, ensuring compatibility with environments that may not fully support the latest ECMAScript module syntax.

"use strict";\n\nObject.defineProperty(exports, '__esModule', {\n  value: true\n});\nexports.default = void 0;\nvar _default = 'Hello, world!';\nexports.default = _default;"

Other packages similar to @babel/helper-split-export-declaration

@babel/plugin-transform-modules-commonjs

This package is part of the Babel ecosystem and transforms ES2015 modules to CommonJS, allowing code to run in environments that do not support ES modules natively. It provides similar functionality to @babel/helper-split-export-declaration by handling module exports in a way that ensures compatibility across different JavaScript environments. However, it is more comprehensive, targeting the entire module system rather than focusing solely on export declarations.

babel-plugin-transform-es2015-modules-amd

Similar to @babel/helper-split-export-declaration, this Babel plugin transforms ES2015 modules to Asynchronous Module Definition (AMD) format. While it serves a similar purpose in terms of making module exports compatible with different environments, it targets AMD rather than CommonJS or other module systems. This makes it suitable for projects that specifically require AMD compatibility.

README

@babel/helper-split-export-declaration

See our website @babel/helper-split-export-declaration for more information.

Install

Using npm:

npm install --save @babel/helper-split-export-declaration

or using yarn:

yarn add @babel/helper-split-export-declaration

Changelog

v7.24.7 (2024-06-05)

:bug: Bug Fix

• babel-node
  • #16554 Allow extra flags in babel-node (@nicolo-ribaudo)
• babel-traverse
  • #16522 fix: incorrect constantViolations with destructuring (@liuxingbaoyu)
• babel-helper-transform-fixture-test-runner, babel-plugin-proposal-explicit-resource-management
  • #16524 fix: Transform using in switch correctly (@liuxingbaoyu)

:house: Internal

• babel-helpers, babel-runtime-corejs2, babel-runtime-corejs3, babel-runtime
  • #16525 Delete unused array helpers (@blakewilson)